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# How to get values on Matlab GUI about Probability functions(expected value, PDF, CDF, variance, moments?)

Asked by Runo Insan on 26 May 2013

Dear Matlab Central

I am working on Matlab for my homework. Can you help me?

1. Defining a polinominal function depends on x variable.
2. Xmin and Xmax point should be defined for function to limit the values.
3. probably density function PDF
4. cumulative density function CDF
5. expected value
6. variance
7. moments
8. Building GUI to calculate these.

Would you kindly write codes, please? I am really new on Matlab even in GUI.

Very special thanks to you!

## 1 Comment

Image Analyst on 26 May 2013

Then, what would be left for you to do? Just turn in our code as your own homework? See this: http://www.mathworks.com/matlabcentral/answers/8626-how-do-i-get-help-on-homework-questions-on-matlab-answers

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Answer by Image Analyst on 26 May 2013

Did you look in the help for those terms? If so, you'd find functions for them, like min(), max(), hist(), var(), cumsum(), etc.

Here's a GUI to get you started MAGIC

```Description
```
```This GUI will help the novice user get up to speed very quickly on using GUI-based applications. Everything is laid out in a very simple Step 1, Step 2, Step 3, etc. layout. It is a very good starting point for a ..............
```

## 1 Comment

Image Analyst on 26 May 2013

Regarding your "Answer" (which really should have been a comment here rather than a new, additional answer)...

Well then go ahead and code them up just like you'd do in C. MATLAB is fairly similar to C so it shouldn't be too hard.

Answer by Runo Insan on 26 May 2013

Thank you for your answer but I have not to use functions. I need to define everything like coding as similar as C/C++. I know "Help" seem ocean contains lots of things to do. But unfortunately I shouldn't do.

Thank you. What else help?